path: root/lib/Basic/Targets.cpp

//===--- Targets.cpp - Implement -arch option and targets -----------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file implements construction of a TargetInfo object from a 
// target triple.
//
//===----------------------------------------------------------------------===//

// FIXME: Layering violation
#include "clang/AST/Builtins.h"
#include "clang/AST/TargetBuiltins.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/LangOptions.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/APFloat.h"
using namespace clang;

//===----------------------------------------------------------------------===//
//  Common code shared among targets.
//===----------------------------------------------------------------------===//

static void Define(std::vector<char> &Buf, const char *Macro,
                   const char *Val = "1") {
  const char *Def = "#define ";
  Buf.insert(Buf.end(), Def, Def+strlen(Def));
  Buf.insert(Buf.end(), Macro, Macro+strlen(Macro));
  Buf.push_back(' ');
  Buf.insert(Buf.end(), Val, Val+strlen(Val));
  Buf.push_back('\n');
}

//===----------------------------------------------------------------------===//
// Defines specific to certain operating systems.
//===----------------------------------------------------------------------===//

static void getSolarisDefines(std::vector<char> &Defs) {
  Define(Defs, "__SUN__");
  Define(Defs, "__SOLARIS__");
}

static void getFreeBSDDefines(std::vector<char> &Defs, bool is64Bit,
                              const char *Triple) {
  // FreeBSD defines; list based off of gcc output

  const char *FreeBSD = strstr(Triple, "-freebsd");
  FreeBSD += strlen("-freebsd");
  char release[] = "X";
  release[0] = FreeBSD[0];
  char version[] = "X00001";
  version[0] = FreeBSD[0];

  Define(Defs, "__FreeBSD__", release);
  Define(Defs, "__FreeBSD_cc_version", version);
  Define(Defs, "__KPRINTF_ATTRIBUTE__");
  Define(Defs, "unix");
  Define(Defs, "__ELF__", "1");
  if (is64Bit) {
    Define(Defs, "__LP64__");
  }
}

static void getDragonFlyDefines(std::vector<char> &Defs) {
  // DragonFly defines; list based off of gcc output
  Define(Defs, "__DragonFly__");
  Define(Defs, "__DragonFly_cc_version", "100001");
  Define(Defs, "__ELF__");
  Define(Defs, "__KPRINTF_ATTRIBUTE__");
  Define(Defs, "__tune_i386__");
  Define(Defs, "unix");
  Define(Defs, "__unix");
  Define(Defs, "__unix__");
}

static void getLinuxDefines(std::vector<char> &Defs) {
  // Linux defines; list based off of gcc output
  Define(Defs, "__unix__");
  Define(Defs, "__unix");
  Define(Defs, "unix");
  Define(Defs, "__linux__");
  Define(Defs, "__linux");
  Define(Defs, "linux");
  Define(Defs, "__gnu_linux__");
  Define(Defs, "__ELF__", "1");
}

/// getDarwinNumber - Parse the 'darwin number' out of the specific targe
/// triple.  For example, if we have darwin8.5 return 8,5,4.  If any entry is
/// not defined, return 0's.  Return true if we have -darwin in the string or
/// false otherwise.
static bool getDarwinNumber(const char *Triple, unsigned &Maj, unsigned &Min) {
  Maj = Min = 0;
  const char *Darwin = strstr(Triple, "-darwin");
  if (Darwin == 0) return false;
  
  Darwin += strlen("-darwin");
  if (Darwin[0] < '0' || Darwin[0] > '9')
    return true;
  
  Maj = Darwin[0]</